Pololu 3.3V, 500mA Step-Down Voltage Regulator D24V5F3

The compact (13 mm × 10 mm × 3 mm) D24V5F3 synchronous buck voltage regulator takes an input voltage up to 36 V and efficiently reduces them to 3.3 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 75% and 90%. The pins have a 0.1" spacing, making this board compatible with standard solderless breadboards and perfboards.

Features:

• Input voltage:
  • 3 V to 36 V for output voltages of 1.8 V and 2.5 V
  • [output voltage + dropout voltage] to 36 V for output voltages of 3.3 V and higher (see below for more information on dropout voltage)
• Fixed 3.3 Voutput with 4% accuracy
• Maximum output current: 500 mA
• Typical efficiency of 80% to 93%
• 500 kHz switching frequency (when not in power-save mode)
• 200 µA typical no-load quiescent current
• Integrated over-temperature and over-current shutoff
• Small size: 13 mm × 10 mm × 3 mm